Adaptive glasses for colorblind people

There are several compilation videos of people receiving Enchroma glasses and seeing color for the first time (here, here, and in their sidebars).

If you know someone who is colorblind who doesn't have these glasses - what are you waiting for?

MIT Technology Review explains how the glasses work.  I didn't even know they existed.  You learn something every day. 

Addendum from reader Drabkikker: Being colorblind typically does not mean you see everything in black and white, but rather that certain colors appear the same to you. What these glasses do is reduce the overlap between those colors, allowing you to distinguish them better.